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20516-72-7

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20516-72-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20516-72-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,5,1 and 6 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 20516-72:
(7*2)+(6*0)+(5*5)+(4*1)+(3*6)+(2*7)+(1*2)=77
77 % 10 = 7
So 20516-72-7 is a valid CAS Registry Number.

20516-72-7Relevant articles and documents

Triphenyl-phosphine and -arsine analogues which facilitate the electrospray mass spectrometric analysis of neutral metal complexes

Decker, Corry,Henderson, William,Nicholson, Brian K.

, p. 3507 - 3513 (2007/10/03)

The six triarylphosphines PPhn(C6H4OMe-p)3-n and PPhn(C6H4NMe2-p)3-n (n = 0-3) and the arsine As(C6H4OMe-p)3 (L) have been synthesized and examined for their use in the electrospray mass spectrometric (ESMS) study of metal complexes. This has been tested with selected examples of the complexes [Mo(CO)4L2], [Fe(CO)3L2], [Fe(CO)4L], [Ru3(CO)9L3], cis-[PtCl2L2], [PdCl2L2] and [AuCl(L)]. All of the metal carbonyl complexes of these ligands gave [M + H]+ ions in their spectra, while in contrast the analogous PPh3 complexes do not, suggesting that these electrospray-friendly ligands should be useful for the characterisation of a wide range of complexes by ESMS. The incorporation of the ligands into metal halide complexes however does not allow the observation of [M + H]+ ions, with ions formed by the previously reported halide-loss mechanism being the only ones observed. The Royal Society of Chemistry 1999.

Transition Metal-carbonyl, -hydrido and -η-Cyclopentadienyl Derivatives of the Fullerene C60

Douthwaite, Richard E.,Green, Malcolm L. H.,Stephens, Adam H. H.,Turner, John F. C.

, p. 1522 - 1523 (2007/10/02)

Monoadduct derivatives of the fullerene C60, namely 2-C60)>, 2-C60)> (R = H, Bun), 2-C5H5)2(η2-C60)H> and 2-C60)H>, are described.

Hydrido(triphenylsilyl)tetracarbonyliron derivatives with phosphine ligands

Bellachioma,Cardaci

, p. 3232 - 3234 (2008/10/08)

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